Performance issue

On Mon, 9 May 2005, Suleiman Souhlal wrote:
> Hello,
>>> I ran ktrace(1) on it, and it appears that python keeps calling
> sigprocmask() continually:
>> 673 python 0.000007 CALL sigprocmask(0x3,0,0x811d11c)
> 673 python 0.000005 RET sigprocmask 0
> 673 python 0.000009 CALL sigprocmask(0x1,0,0x8113d1c)
> 673 python 0.000005 RET sigprocmask 0
> etc..
>> This explains why it's using so much system time. Now the question is
> why is python doing this?
I don't know what python's doing, but it might not be calling
sigprocmask directly. There are a few libc functions that use
sigprocmask:
db/btree/
db/hash/
pselect(),
setmode(),
{sig}setjmp(), {sig}longjmp(),
grantpt(),
system()
to name a few. Python may also be using other libraries which
use sigprocmask().
--
DE